I don't know of much regional terms here in northern California.
We've got
" Jack In the crack "
" Ghetto birds "
" Wally world "
" Ghetto Mart "
" Bible thumper "
That's Jack in the box, police helicopters, Walmart, K Mart, and lastly anyone whose really preachy about church or even one of those door to door " have you heard the good word " types.
I don't know if any of these are common elsewhere or not, probably are but I've never really been anywhere else.
I probably shouldn't say on this forum what my grandmother calls a Slingshot or what my dad calls Mexicans.